I just had TruGreen out to our house to look at our pineapple palm. I have had 3 fronds turn brown, that were not the bottom fronds, close to it but not the bottom. They died fairly quickly. The top of the tree looks fine. Then again, its so big I cant get up there to really see it but from the ground the new growth looks healthy. First the guy thought (over the phone) it has fusarium wilt. I researched and researched (this site was no help). I dont believe that is our problem....I HOPE that is not the problem. The expert came out and it has the leaf skeletonizer evidence but its dead. I sprayed the tree about 3 months ago with Othro's systemic and a year round pesticide oil. That might have killed it:) Tru Green recently took over our shrubs, because of this tree. Normally I do it all myself and would prefer to, but this tree is too important so I decided to hire someone. Our date palm is 25 feet tall. The palm also has false smut (grapholia leaf spot) and they sprayed it this week with a fungicide. The guy thinks the dying limbs is petiole rachis blight that has similar symptoms to the fusarium wilt disease (FW is fatal to the tree, its similar to the butt rot disease on the queen palms) Our palm also has Potassium deficiency. Basically, it has several issues we are working on correcting. The guy did tell me to have the tree lightly trimmed, to remove the fronds that died and to remove one layer around the bottom. He wants to inspect the cut limbs that died to see if he can identify if its fusarium wilt. Supposidly you can tell by looking at the cut off rachis. We have only lived here for 20 months so I think most of the problems were neglect from the previous homeowner. We have regularly fertilized the palm. I am determined to get this tree back to normal:) Good luck with yours.